Wasted, as cherries may be (6)
I believe the answer is:
stoned
'wasted as' is the definition.
The definition and answer can be both related to change as well as being past participle verbs.
Perhaps you can see an association between them that I can't see?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for stoned that I've seen before include "High on a drug" , "Under the influence of drugs (colloq.)" , "effects of drug" , "attacked with missiles" , "High; intoxicated" .)